QUERY

sanjukta ghosh

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Jun 15, 2024, 3:01:58 AM6/15/24

to wrf-ch...@ucar.edu, wrf-chem

Hello,

If I run WRF CHEM using CBMZ MOSAIC, I know it simulates the concentration of PM2.5 into 4 different bin sizes. But again it provides a concentration called "PM2_5_DRY". What does it mean? And how to calculate the concentration of PM2.5 when using schemes with different bin sizes. I searched the internet but couldn't find a suitable answer. Please advise.

Neeldip Barman

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Jun 15, 2024, 3:46:27 AM6/15/24

to sanjukta ghosh, wrf-ch...@ucar.edu, wrf-chem

Hi Sanjukta,

"PM2_5_DRY" is the sum of the concentrations of the first 3 smallest bins (~37 nm - 2.5 um) in MOSAIC without water. Check https://github.com/wrf-model/WRF/blob/master/chem/module_mosaic_sumpm.F

Neeldip

On Sat, Jun 15, 2024 at 12:31 PM sanjukta ghosh <18sanju...@gmail.com> wrote:

Hello,
If I run WRF CHEM using CBMZ MOSAIC, I know it simulates the concentration of PM2.5 into 4 different bin sizes. But again it provides a concentration called "PM2_5_DRY". What does it mean? And how to calculate the concentration of PM2.5 when using schemes with different bin sizes. I searched the internet but couldn't find a suitable answer. Please advise.

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sanjukta ghosh

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Jun 15, 2024, 5:40:17 AM6/15/24

to Neeldip Barman, wrf-ch...@ucar.edu, wrf-chem

Thanks, Neeldip for the clarification. I will go through the reference.

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